Problem - The following information is for the third quarter of this year:
Planned
Production 92,000 units
Direct labor hours 506,800 DL hrs
Fixed manufacturing overhead $205,000
Variable manufacturing overhead $910,000
Standard direct labor hour per unit 5.5
Actual
Production 87,000 units
Direct labor hours 380,000 DL hrs
Fixed manufacturing overhead $182,400
Variable manufacturing overhead $841,500
Calculate the following three overhead variances.
a. Overhead volume variance
b. Overhead efficiency variance
c. Overhead spending variance